You should never trust any analysis - it's just point of view based on experience of particular analyst. TA is not exact science. Good, even great analyst will be right more often than bad analyst. That doesn't change a fact that all of them will be wrong at some point.
Follow more then one, but THE MOST important thing is, learn basics Yourself. Basic rules of EW and basic chart patterns are not hard to learn and train. Haejin and some other analysts in here even give free tutorials. Use them.
Believe me, knowing a bit Yourself is fundamental before using work of others. You don't have to study it for years. A few days of reading and training is enough to understand what Haejin and his fellow analysts in Steemit try to show You.
Never "trust" single analyst. Otherwise in no time You'll be one of sad people in comments saying You lost money because You went all in on someones prediction.